Volume 26, Issue 6 pp. 1190-1199
ORIGINAL ARTICLE

Gene and immunohistochemical expression of HIF-1α, GLUT-1, FASN, and adipophilin in carcinoma ex pleomorphic adenoma development

João Figueira Scarini

João Figueira Scarini

Oral Diagnosis Department, Piracicaba Dental School/UNICAMP, Piracicaba, Brazil

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Larissa Fernandes Rosa

Larissa Fernandes Rosa

Pathology Department, Faculty of Medical Sciences/UNICAMP, Campinas, Brazil

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Reydson Alcides de Lima Souza

Reydson Alcides de Lima Souza

Oral Diagnosis Department, Piracicaba Dental School/UNICAMP, Piracicaba, Brazil

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Erika Said Abu Egal

Erika Said Abu Egal

Pathology Department, Faculty of Medical Sciences/UNICAMP, Campinas, Brazil

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Alfio José Tincani

Alfio José Tincani

Head and Neck Surgery Department, Faculty of Medical Sciences/UNICAMP, Campinas, Brazil

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Antônio Santos Martins

Antônio Santos Martins

Head and Neck Surgery Department, Faculty of Medical Sciences/UNICAMP, Campinas, Brazil

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Luiz Paulo Kowalski

Luiz Paulo Kowalski

Head and Neck Surgery Department, AC Camargo Cancer Center, São Paulo, Brazil

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Edgard Graner

Edgard Graner

Oral Diagnosis Department, Piracicaba Dental School/UNICAMP, Piracicaba, Brazil

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Ricardo Della Coletta

Ricardo Della Coletta

Oral Diagnosis Department, Piracicaba Dental School/UNICAMP, Piracicaba, Brazil

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Roman Carlos

Roman Carlos

Oral and Maxillofacial Pathology Laboratory, Head and Neck Clinical Center, Guatemala City, Guatemala

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Rogério de Oliveira Gondak

Rogério de Oliveira Gondak

Department of Pathology, Federal University of Santa Catarina (UFSC), Florianópolis, Brazil

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Oslei Paes de Almeida

Oslei Paes de Almeida

Oral Diagnosis Department, Piracicaba Dental School/UNICAMP, Piracicaba, Brazil

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Albina Messias de Almeida Milani Altemani

Albina Messias de Almeida Milani Altemani

Pathology Department, Faculty of Medical Sciences/UNICAMP, Campinas, Brazil

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Débora Campanella Bastos

Débora Campanella Bastos

Oral Diagnosis Department, Piracicaba Dental School/UNICAMP, Piracicaba, Brazil

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Fernanda Viviane Mariano

Corresponding Author

Fernanda Viviane Mariano

Pathology Department, Faculty of Medical Sciences/UNICAMP, Campinas, Brazil

Correspondence

Fernanda Viviane Mariano, Pathology Department, Faculty of Medical Sciences/ University of Campinas, Av. Tessália Vieira de Camargo, 126 – Barão Geraldo, Cidade Universitária, 13083-887 Campinas, São Paulo, Brazil.

Email: [email protected]

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First published: 16 March 2020
Citations: 17

Abstract

Objective

To analyze the gene and immunohistochemical expression of HIF-1α, GLUT-1, FASN, and adipophilin in normal salivary gland (NSG), pleomorphic adenoma (PA), and carcinoma ex pleomorphic adenoma (CXPA) samples.

Material and Methods

The gene expression was investigated by the real-time PCR (qRT-PCR) method in 9 samples of frozen tissues of normal salivary gland, 13 PA, and 10 CXPA. We validated the reactions by immunohistochemistry on 20 samples from NSG, 85 PA, and 44 CXPA.

Results

Our results showed that there was no statistically significant difference in HIF-1α gene and immunohistochemistry expression among the tissues studied while FASN gene and immunohistochemistry expression increased along the carcinogenesis of the PA. GLUT-1 was significantly more expressed in tumor tissues (PA and CXPA), although protein is mainly expressed in transformed cells than in PA and NSG. In contrast, adipophilin was significantly more expressed in NSG while the expression of the protein increased in PA and CXPA.

Conclusions

In summary, the data presented here suggest that neoplastic cells reprogram the expression of GLUT-1 and adipophilin to adapt to the tumor microenvironment and reinforce, through immunohistochemical results, a possible transcriptional and post-translational regulatory mechanisms that act on the expression of these genes.

CONFLICTS OF INTEREST

All authors have declared no conflicts of interest.

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